Pack-frame.



B. F. CRAMER.

PACK FRAME.

APPLICATION nuzo FEB.15,1915.

Patented Aug. 17; 1915.

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B. F. CRAMER.

PACK FRAME.

APPLICATION FILED 5.15.1915.

Patented Au 17, 1915.

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BENJAMIN IF. CRAMER, 0F SANDPOINT, IDAHO.

PACK-FRAME.

Application filed February 15, 1915 and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to pack frames or saddles and the primary objectof the invention is the provision of a frame for mounting upon the backof a man to facilitate the carrying of a pack.

Another object of this invention is to provide a packfr'ame as specifiedwhich has a pair of. arcuate swivelly supported laterally adjustablearms for engagement over and against a mans shoulder for supporting theframe upon his back.

A still further object of this invention is to cover the frame withcanvas for preventing the pack from engaging the clothes or body of theman carrying the same.

With the foregoing and other objects in view this invention consists insuch novel features of construction, combination and arrangement ofparts as will be hereinafter more fully described, illustrated in theaccompanying drawings and claimed.

In describing the invention in detail reference will be had to theaccompanying drawing wherein like characters designate like orcorresponding parts throughout the several views, and in which:

Figure 1 is a perspective view of the improved pack frame s'howing apart of the canvas covering therefor broken away. Fig. 2 is afragmentary view partially in section of the pack frame showing one ofthe shoulder engaging arms in plan. Fig. 3 is a detail perspective viewof the bracket for swivelly mounting the shoulder engaging arm. Fig. 4.is a detail viewshowing the manner of lateral adjustment of the arm, andFig. 5 is a view of a canvas blankwhich is inserted over the frame. v

Referring more particularly to the drawings, l designates the packing asan entirety, which is composed of vertical side bars 2 and 3, which areconnected by cross bars 4. The pack frame has cross bars 41: positionedat the top and lower ends of the side bars 2 and 3 and it also has stayrods or sup- Speeification of Letters Patent.

Patented Aug. 17, 1915.

Serial No. 8,272.

porting rods 5 extending from one of the side bars to the other forstrengthening and bracing the frame. The side bars 2 and 3 have securedthereto and suspended between their facing sides, a short distancedownwardly from their upper ends, a cross bar 6 which carries theshoulder engaging arms 7 and 8. The bar 6 has adjustably mountedthereupon brackets 9 and 10, which brackets have their upper ends curvedto form substantially a U-shape for encompassing the bar and also toform a transversely extending plate 11 to which is pivotally connectedone side of a plate 12. The lower end of the bracket 9 extendstransversely from the back 13 thereof and has the other side of thebracket 12 pivotally or swivelly con nected thereto as is clearly shownin Figs. 1, 2 and 3 of the drawings.

The bases 14 of the brackets 9 and 10 have angle plates 15 securedthereto. The angle plates 15 have screw threaded openings 16 formed intheir vertically and downwardly extending sides which receive the screwthreaded shanks of bolts 17 for moving the brackets longitudinally uponthe bar 6 upon the rotation of the bolt 17. The bolts 17 extend throughthe side bars 2 and 3 and have eyelets 18 formed upon their outer endsfor facilitating the manual rotation thereof. The bolts 17 are looselymounted in the side bars 2 and 3.

The brackets 12 which are swivelly connected between the base plate 14and the transversely extending plates 11 of the brackets 9 and 10 havearcuate arms 20 secured thereto and extending forwardly therefrom andfrom the frame 1. The arcuate arms 20 are curved to substantially fit amans shoulder and they have oblong eyelets 21 formed upon their outerends through which are inserted cushioning straps 22. Thecushioningstraps 22 are double thickness and are wound or bent upwardly andsecured to the arms 20 adjacent the brackets 12 by whang strips or othersuitable lacing material as is clearly shown in Figs. 1 and 2. Thestraps 22 have plates 24 slidably mounted thereupon. The straps 22 areinserted through slots formed in the plate 2 1. The plates 24: have earsor tongues 25 formed thereupon which are provided with transverseopenings 26 which have inserted therethrough the bolts 26, which areused for pivotally connecting the brackets 12 to the plates 11. Theupper plate 11 has a screw threaded opening 26 formed therein whichreceives the upper screw threaded end of the bolt 26. The plates 24:tend to hold the straps 22 out of engagement with the metallic arms 20.

In Fig. 5 of the drawings a blank of canvas is shown which is insertedover the frame 1 to prevent the pack which is attached thereto fromengaging the body of the person. This canvas collar has its edgesoverlapped and secured by means of eyelets 27, which extend through andperforate the marginal edges of the blank 28 and it has its lower edgebent upwardly for forming a pocket as indicated at 29 in Fig. 5, whichpocket receives the lower ends of the side strips 2 and 3. The blank orform 28 of canvas is also provided with a rectangular shaped opening 30formed therein through which the arcuate arms 20 are inserted and it hasslots 31 formed therein through which the eyes 18 of the bolts 17 areinserted.

When it is desired to mount the pack frame heretofore described upon amans back, the arms 7 and 8 are adjusted laterally or longitudinallyupon the bar 6 to provide for the proper width of the mans shoulders andthe pack is attached to the frame in any suitable manner or position, asdesired by the person carrying the same. If it is so desired a suitablestrap may be inserted through the opening 31 and cross across the breastof the carrier for preventing the accidental loosing or displacement ofthe pack frame. The straps 22 rest upon the upper surface or side of thecarriers shoulder and against the front and rear parts of the shoulder,efficiently cushioning the pack frame and preventing galling of thepersons body by the metallic arcuate arms 20. r

In reducing the invention to practice certain minor features of(ionstruction, combination and arrangement of parts may necessitatealterations to which the patentee is entitled provided such alterationsare comprehended within the scope of what is claimed. i

What is claimed is 1; In a pack frame structure, a substantiallyrectangular frame having a pair of arcuate shoulder engaging armsswivelly carried thereby.

2. In a pack frame structure, a substantially rectangular frame having apair of arcuate shoulder engaging arms carried thereby, said arms beingadjustable for movement toward or from each other.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

3. In a pack frame structure, a substantially rectangular frame having across bar formed therein, and a pair of arcuate shoulder engaging armsslidably carried by said bar for movement toward or from each other.

4. ha pack frame structure, a substantially rectangular frame, a crossbar carried by said frame, a pair of brackets slidably mounted upon saidcross bar for movement toward or from each other, and a'pair of arcuateshoulder engaging arms swivelly carried by said brackets.

5. In a pack frame structure, a tially rectangular frame, a cross barcar ried by the upper end of said frame, a pair of brackets slidablymountedupon said cross bar, depending ears formed upon said brackets,screw threaded bolts carried by said frame and engaging said dependingears for moving said brackets toward or from each other, and arcuateshoulder engaging arms carried by said brackets.

6. In a pack frame structure, a substantially rectangular frame having across piece carried thereby adjacent its upper. end, brackets slidablymounted upon said cross piece, means for moving said brackets toward orfrom each other, arcuate shoulder engaging arms swivelly carried by saidbrackets, and shoulderpads detachably secured to the inner surface ofsaid arcuate shoulder engaging arms.

substan- J 7. In a packframe structure, a substantially rectangularframe having a cross piece carried thereby adjacent its upper end,brackets slidably moiuited upon said cross piece, means for moving saidbrackets toward or from each other, arcuate shoulder engaging armsswivelly carried by said brackets, andshoulder pads detachably securedto the inner surface of said arcuate shoulder engaging arms, and acanvas covering mounted upon said rectangular frame.

8. In a pack frame structure, a substantially rectangular frame havingarcuate transversely extending shoulder engaging arms carried thereby,said arms being adjustable to or from each other, shoulder padsdetachably secured to the inner sides of said arms, and a canvascovering mounted over said frame.

In testimony whereof I affix my signature in presence of two witnesses.

-BENJAMIN F. CRAMER;

Witnesses:

ORVILLE S. FRAZIER, G. E. L. SoARE.

Washington, D. G.

